Product Management Problem | Java Community | Help. Code. Learn. | Page 1

magic zenith Jul 16, 2024, 11:18 AM

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I am in the process of modifying a JavaFX program that allows me to use Splash app and integrate unit of measure. It is a product management software with a list view that showcases what you created, deleted, and modified. Somehow, despite having outfitted every code without error, creating a product for the list just ends up as null and the Combobox used for the units has nonexistent values. Anyone interested in helping me crack this code?

brisk brookBOT Jul 16, 2024, 11:18 AM

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Hey @magic zenith! Please use /close or the Close Post button above when your problem is solved. Please remember to follow the help guidelines. This post will be automatically closed after 300 minutes of inactivity.

TIP: Narrow down your issue to simple and precise questions to maximize the chance that others will reply in here.

magic zenith Jul 16, 2024, 11:19 AM

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Here is the error in question

severe badger Jul 16, 2024, 11:29 AM

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magic zenith Here is the error in question

Hi, can you provide some code?

magic zenith Jul 16, 2024, 12:08 PM

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severe badger Hi, can you provide some code?

Is it alright if i send the zip?

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A bit of a warning, this program here needs a filepath to Java and Maven folders from your File Explorer

not only that, an SQL Configurator needs to be set up in order to use your own password in its yml file

magic zenith Jul 16, 2024, 12:46 PM

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Unless you don't wanna run it, I could just send the file immediately?

severe badger Jul 16, 2024, 1:15 PM

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magic zenith Unless you don't wanna run it, I could just send the file immediately?

Sorry for the late response. I have work... Just send here a code of CreateProductController.

magic zenith Jul 16, 2024, 1:31 PM

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Hold on

scarlet cipherBOT Jul 16, 2024, 1:31 PM

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package com.gabriel.prodmsv;

import com.gabriel.prodmsv.ServiceImpl.ProductService;
import com.gabriel.prodmsv.model.Product;
import com.gabriel.prodmsv.model.Uom;
import com.gabriel.prodmsv.ServiceImpl.UomService;

import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.Node;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ComboBox;
import javafx.scene.control.TextField;
import javafx.stage.Stage;
import javafx.stage.Window;
import lombok.Setter;

import java.net.URL;
import java.util.ResourceBundle;

@Setter ```java

public class CreateProductController implements Initializable {
@Setter
ProdManController prodManController;
@FXML
public TextField tfName;
@FXML
public TextField tfDesc;
@FXML
private ComboBox<Uom> cbUom;
public Button btnSubmit;
public Button btnNext;

@Setter
Stage stage;
@Setter
Scene parentScene;
@Setter
ProductService productService;
@Setter
UomService  uomService;

@Override
public void initialize(URL url, ResourceBundle resourceBundle){
    System.out.println("CreateProductController: initialize");

    try{
    Uom[] uoms = UomService.getService().getUoms();
    cbUom.getItems().clear();;
    cbUom.getItems().addAll(uoms);

    tfName.setText("");
    tfDesc.setText("");
    } catch(Exception e){
        System.out.println(e.getMessage());
    }
}

public void clearControlTexts(){
    tfName.setText("");
    tfDesc.setText("");
    cbUom.getSelectionModel().clearSelection();
} ```

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public void onNext(ActionEvent actionEvent) {
        System.out.println("CreateProductController:onBack ");
        Node node = ((Node) (actionEvent.getSource()));
        Window window = node.getScene().getWindow();
        window.hide();

        stage.setScene(parentScene);
        stage.show();
    }

    public void onSubmit(ActionEvent actionEvent) throws Exception{
        Product product = new Product();
        product.setName(tfName.getText());
        product.setDescription(tfDesc.getText());
        Uom uom = cbUom.getSelectionModel().getSelectedItem();
        product.setUomId(uom.getId());
        product.setUomName(uom.getName());
        try{
            // Ensure productService is not null
            if(productService == null){
                productService = ProductService.getService();
            }
            prodManController.refresh();
            onBack(actionEvent);
        } catch(Exception ex){
            System.out.println("CreateProductController:onSubmit Error: " + ex.getMessage());
        }
    }

    public void onBack(ActionEvent actionEvent) {
        System.out.println("CreateProductController:onBack ");
        Node node = ((Node) (actionEvent.getSource()));
        Window window = node.getScene().getWindow();
        window.hide();

        stage.setScene(parentScene);
        stage.show();
    }
} ```

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magic zenith Jul 16, 2024, 1:32 PM

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So far, most of the codes have a usage

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I checked back on the directory leading to the codes for the Unit of measure

severe badger Jul 16, 2024, 1:36 PM

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scarlet cipher ```java public void onNext(ActionEvent actionEvent) { System.out.println...

So, based on the stacktrace and provided code it seems that the issue is that you have not selected any item from your combobox.

magic zenith Jul 16, 2024, 1:41 PM

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severe badger So, based on the stacktrace and provided code it seems that the issue is that yo...

Pretty much
but the items from the combobox should appear inside with the use of this

scarlet cipherBOT Jul 16, 2024, 1:41 PM

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package com.gabriel.prodmsapp.entity;

import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.Data;
import org.hibernate.annotations.CreationTimestamp;
import org.hibernate.annotations.UpdateTimestamp;

import javax.persistence.*;
import java.util.Date;

@Data
@Entity
@Table(name = "uom_data") ```java

public class UomData {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
int id;
String name;

@UpdateTimestamp
@Temporal(TemporalType.TIMESTAMP)
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+08:00")
private Date lastUpdated;

@CreationTimestamp
@Temporal(TemporalType.TIMESTAMP)
@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+08:00")
private Date created;

} ```

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severe badger Jul 16, 2024, 1:42 PM

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But this are two different issues. First issue is how to populate combobox with items and second how to retrieve them.

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When you open the cmb can you see some items or not?

magic zenith Jul 16, 2024, 1:43 PM

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severe badger But this are two different issues. First issue is how to populate combobox with ...

Fair point

magic zenith Jul 16, 2024, 1:43 PM

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severe badger When you open the cmb can you see some items or not?

Not exactly..

severe badger Jul 16, 2024, 1:44 PM

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well, than first you have to check whether you are loading your items correctly

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check if there are some items returned from call "UomService.getService().getUoms()"

magic zenith Jul 16, 2024, 1:50 PM

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severe badger check if there are some items returned from call "UomService.getService().getUom...

Nadda 😔

severe badger Jul 16, 2024, 1:50 PM

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well, than you have to figure out why

magic zenith Jul 16, 2024, 1:53 PM

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severe badger well, than you have to figure out why

Well...as far as I'm looking at the codes right now
It only notified now that some of the prompts have no usages.

severe badger Jul 16, 2024, 1:54 PM

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show me how you retrieve Uoms...

magic zenith Jul 16, 2024, 1:55 PM

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can't i just send the file?
it'd be convenient if we both see through it
with your permission, of course

severe badger Jul 16, 2024, 1:56 PM

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just post it here. It should be few pieces of lines of code

scarlet cipherBOT Jul 16, 2024, 1:59 PM

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public Uom create(Uom uom) {
        String url = endpointUrl;
        HttpHeaders headers = new HttpHeaders();
        HttpEntity<Uom> request = new HttpEntity<>(uom, headers);
        final ResponseEntity<Uom> response =
                getRestTemplate().exchange(url, HttpMethod.PUT, request, Uom.class);
        return response.getBody();
    }

public Uom update(Uom uom) {
        logger.info("update: " + uom.toString());
        String url = endpointUrl;
        HttpHeaders headers = new HttpHeaders();
        HttpEntity<Uom> request = new HttpEntity<>(uom, headers);
        final ResponseEntity<Uom> response =
                getRestTemplate().exchange(url, HttpMethod.POST, request, Uom.class);
        return response.getBody();
    }

public void delete(Integer id) {
        logger.info("delete: " + Integer.toString(id));
        String url = endpointUrl + "/" + Integer.toString(id);
        HttpHeaders headers = new HttpHeaders();
        HttpEntity<Uom> request = new HttpEntity<>(null, headers);
        final ResponseEntity<Uom> response =
                getRestTemplate().exchange(url, HttpMethod.DELETE, request, Uom.class);
    } ```

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severe badger Jul 16, 2024, 1:59 PM

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okay, this is create, update and delete. What about get?

scarlet cipherBOT Jul 16, 2024, 2:00 PM

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public static UomService getService(){
        if(service == null){
            service=new UomService();
        }
        return service;
    }
    public RestTemplate getRestTemplate() {
        if (restTemplate == null) {
            restTemplate = new RestTemplate();
            List<HttpMessageConverter<?>> messageConverters = new ArrayList<>();
            MappingJackson2HttpMessageConverter converter = new MappingJackson2HttpMessageConverter();
            converter.setSupportedMediaTypes(Collections.singletonList(MediaType.APPLICATION_JSON));
            messageConverters.add(converter);
            restTemplate.setMessageConverters(messageConverters);
        }
        return restTemplate;
    }

    public Uom getUom(Integer id) {
        String url = endpointUrl + "/" + Integer.toString(id);
        logger.info("getUom: " + url);

        HttpHeaders headers = new HttpHeaders();
        HttpEntity request = new HttpEntity<>(null, headers);
        final ResponseEntity<Uom> response =
                getRestTemplate().exchange(url, HttpMethod.GET, request, Uom.class);
        return response.getBody();
    }

    public Uom[] getUoms() {
        String url = endpointUrl;
        logger.info("getUoms: " + url);

        HttpHeaders headers = new HttpHeaders();
        HttpEntity request = new HttpEntity<>(null, headers);
        final ResponseEntity<Uom[]> response =
                getRestTemplate().exchange(url, HttpMethod.GET, request, Uom[].class);
        Uom[] uoms = response.getBody();
        return uoms;
    } ```

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magic zenith Jul 16, 2024, 2:00 PM

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Mostly all of this

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I apologize for any inconvenience

severe badger Jul 16, 2024, 2:01 PM

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that's fine 🙂 So are you sure your request is correct?

magic zenith Jul 16, 2024, 2:02 PM

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The getters have some usages for the most part
Connected on CreateProduct and UpdateProduct Controllers....

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This is a code I have been asked for help to modify but so far this is beyond me when it's Splash view...

severe badger Jul 16, 2024, 2:04 PM

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From my POV it seems that in method "getUoms()" the "response.getBody()" return empty array. You have to find out why.

magic zenith Jul 16, 2024, 2:06 PM

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I see...

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I should probably continue this tomorrow...

May I be able to chat with you again when I need to?

magic zenith Jul 16, 2024, 2:10 PM

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severe badger From my POV it seems that in method "getUoms()" the "response.getBody()" return ...

That is if you're still up for it.

severe badger Jul 16, 2024, 2:14 PM

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yeah sure. Just ping me in this channel 🙂

brisk brookBOT Jul 16, 2024, 7:20 PM

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This post has been inactive for over 300 minutes, thus, it has been archived.
If your question was not answered yet, feel free to re-open this post or create a new one.
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magic zenith Jul 17, 2024, 11:06 AM

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@severe badger Hey, I'm back

severe badger Jul 17, 2024, 11:06 AM

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cool 🙂

magic zenith Jul 17, 2024, 11:40 AM

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severe badger cool 🙂

Sorry for the late reply but uh...
Got no luck in figuring out what to do

magic zenith Jul 17, 2024, 12:18 PM

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Although I'm trying to do something that may activate the ComboBox

magic zenith Jul 17, 2024, 1:16 PM

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@severe badger You still there or is this a bad time?

magic zenith Jul 17, 2024, 1:57 PM

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I'm still working on the code

brisk brookBOT Jul 17, 2024, 7:00 PM

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💤 Post marked as dormant

This post has been inactive for over 300 minutes, thus, it has been archived.
If your question was not answered yet, feel free to re-open this post or create a new one.
In case your post is not getting any attention, you can try to use /help ping.
Warning: abusing this will result in moderative actions taken against you.

magic zenith Jul 18, 2024, 8:16 AM

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@severe badger Hey buddy, I'm actually back

severe badger Jul 18, 2024, 8:34 AM

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Hi, can you ping me in two hours? Then I should have some time for you. And sorry for yesterday. I had some urgent stuff at work...

severe badger Jul 18, 2024, 8:35 AM

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magic zenith <@296302685957783553> Hey buddy, I'm actually back

But until that you have to find out how to make a proper http request so it will return you some data. Without that we cannot move on...

magic zenith Jul 18, 2024, 8:42 AM

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severe badger Hi, can you ping me in two hours? Then I should have some time for you. And sorr...

No worries

magic zenith Jul 18, 2024, 8:43 AM

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severe badger But until that you have to find out how to make a proper http request so it will...

Here's the thing, I think the whole thing's null because I cannot initialize the U.o.m on the comboBox. The text fields work, the other fields open as intended but it cannot create without the U.O.M.

I think this is a good time to give you the zip file so you can have a visualization of the whole thing

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With your permission, of course

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I don't wanna overload your routine atm

severe badger Jul 18, 2024, 10:29 AM

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magic zenith I don't wanna overload your routine atm

Give me the prove that the HTTP request you are makng to obtain UOMs is returning some data. Only than we will have something to talk about.

magic zenith Jul 18, 2024, 12:24 PM

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severe badger Give me the prove that the HTTP request you are makng to obtain UOMs is returnin...

Look, it's been an hour
I'm still trying to obtain them

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You're not gonna help me?

severe badger Jul 18, 2024, 12:25 PM

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well, I saw your code and it looks good. So solve the issue with HTTP and you are good to go

#Product Management Problem